Terms of use
Last updated November 10, 2026
These terms apply to the Nistia app for iPhone and to this website. By downloading or using Nistia, you accept them. If you do not agree, please do not use the app.
1. Publisher
Nistia is published by INDIGATE LLC (“we”). Contact: contact@indigatellc.com.
2. The app
Nistia is a timer and a logbook for intermittent fasting: plans, reminders, history, statistics, widgets, and weight and water logs. It works without an account. Your data is stored on your device, as described in the privacy policy.
3. License
We grant you a personal, non-exclusive, non-transferable license to use Nistia on Apple devices that you own or control, as permitted by the App Store usage rules. Apple’s Licensed Application End User License Agreement (standard EULA) also applies; if it conflicts with these terms on a point that it covers, the standard EULA prevails.
You may not copy, resell or redistribute the app, or attempt to extract its source code, except where the law expressly allows it.
4. Health notice
Nistia is not a medical device and does not provide medical advice, diagnosis or treatment. It measures nothing. The information shown in the app, including fasting stages, is general information with cited sources, not advice for your personal situation. Nistia makes no promise about results of any kind.
Fasting is not suitable for everyone. Talk to a doctor before you start, and do not fast without medical advice if you are pregnant or breastfeeding, under 18, living with diabetes or another medical condition, taking medication, or if you have or have had an eating disorder. Stop fasting and seek medical help if you feel unwell.
Nistia shows a warning for fasts longer than 24 hours and does not allow plans longer than 72 hours. You remain solely responsible for your decisions about food and fasting.
5. Free features and optional purchases
Nistia is free to download and its core features are free with no time limit. Your history of past fasts is always available to view, edit and export, whether or not you have bought anything.
Some features require an optional purchase: an auto-renewable subscription or a one-time purchase. The features included, the price, the length of each period and any free trial are shown in the app before you buy.
6. Subscriptions
- Payment is charged to your Apple Account when you confirm the purchase.
- A subscription renews automatically for the same period unless it is cancelled at least 24 hours before the end of the current period.
- Your account is charged for renewal within 24 hours before the end of the current period, at the price shown in the app.
- If a free trial is offered, the subscription starts and is charged at the end of the trial unless you cancel at least 24 hours before it ends.
- You can manage or cancel a subscription at any time in the settings of your Apple Account (Settings, your name, Subscriptions). Deleting the app does not cancel a subscription.
- When a subscription ends, the paid features stop being available. None of your data is hidden or deleted.
A one-time purchase gives access to the paid features of the app without renewal, for as long as the app is available.
Purchases can be restored on your devices with “Restore purchases” in the app settings.
7. Refunds
Purchases are made through Apple, and refunds are handled by Apple under its own terms. You can make a request at reportaproblem.apple.com. Rights that the law of your country gives you as a consumer are not affected.
8. Your data and backups
Your data is stored only on your device. We have no copy and cannot restore it. You are responsible for keeping backups, using the backup file or the CSV export offered by the app.
9. Intellectual property
The app, its name, its design and its content belong to INDIGATE LLC or its licensors. What you enter in the app remains yours.
10. Availability and changes to the app
We work to keep Nistia reliable, but we provide it “as is”, without a guarantee that it will be free of errors or interruptions. Reminders, widgets and the Live Activity depend on your iPhone settings and on iOS, and may be delayed or missing. We may change or remove features, while keeping your access to your history.
11. Liability
To the extent permitted by law, we are not liable for indirect or consequential damage arising from the use of the app, nor for decisions about your health made on the basis of the app. Nothing in these terms limits liability that cannot be limited by law, or the rights you have as a consumer under the law of your country.
12. Changes to these terms
We may update these terms. The date at the top of this page shows the latest version. If a change is significant, the app will tell you. Continuing to use the app after a change means you accept the new terms.
13. Applicable law
These terms are governed by the law applicable at the registered office of INDIGATE LLC, without prejudice to the mandatory consumer protection rules of the country where you live.